|Publication number||US7618294 B1|
|Application number||US 12/260,927|
|Publication date||Nov 17, 2009|
|Filing date||Oct 29, 2008|
|Priority date||Oct 29, 2008|
|Publication number||12260927, 260927, US 7618294 B1, US 7618294B1, US-B1-7618294, US7618294 B1, US7618294B1|
|Inventors||Ming-Han Lin, Te-hung Yin|
|Original Assignee||Cheng Uei Precision Industry Co., Ltd.|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (12), Referenced by (20), Classifications (11), Legal Events (2)|
|External Links: USPTO, USPTO Assignment, Espacenet|
1. Field of the Invention
The present invention generally relates to a connector, and more particularly to an audio plug connector.
2. The Related Art
A conventional audio plug connector is a standardized three-contact plug. The audio plug connector usually includes a sleeve, a ring, and a terminating tip. The audio plug connector is connected with a headset cable. Such headsets include a speaker for audio output and a microphone for audio input. The headset cable is typically terminated by the standardized three-contact audio plug connector, for example, the microphone wired to the tip, the speaker wired to the ring, and a headset ground wired to the sleeve of the audio plug connector. The audio plug connector is inserted into a complement audio jack connector which includes internal contacts to selectively contact the sleeve, ring, and tip of the audio plug connector to transmit audio signals.
However, sometimes the microphone function is not required for users, but the microphone is always electrically connected with the audio jack connector when the audio plug connector is electrically connected with the audio jack connector. In order to make the microphone inactive, the audio plug connector has to be pushed out of the audio jack connector, which also makes the speaker inactive. It is inconvenient for the users.
An object of the present invention is to provide an audio plug connector adapted for mating with an audio jack connector. The audio plug connector includes a contact module, a plug, and a switch module. The contact module includes a shell, a first contact terminal and a second contact terminal both received in the shell. The plug disposed in the shell has a mating portion, a first contact portion and a second contact portion. The mating portion extends out of the shell. The first contact portion and the second contact portion are received in the shell and respectively contact the first contact terminal and the second contact terminal. The switch module includes a shaft and a switch terminal held in one end of the shaft. The end of the shaft holding the switch terminal is rotatably received in the shell. The switch terminal is selectively connected with the first contact terminal and the second contact terminal under the rotation of the shaft.
As described above, the audio plug connector provides the switch terminal to be selectively connected with the first contact terminal and the second contact terminal, which makes the audio plug connector inactive or in operation. So the audio plug connector can be inactive without being pushed out from the audio jack connector. The audio plug connector according to the present invention is convenient for users.
The present invention will be apparent to those skilled in the art by reading the following description of a preferred embodiment thereof, with reference to the accompanying drawings, in which:
With reference to
The plug 10 is of a substantially cylindrical shape and includes a mating portion 11, a first contact portion 12, a second contact portion 13, and an extending portion 14 which are disposed in turn along an axis of the plug 10. A holding board 15 extends rearward from the extending portion 14. Two first holding holes 151 are formed in the holding board 15.
Please refer to
The set of contact terminals includes a first contact terminal 21 and a second contact terminal 22. The first contact terminal 21 has an arc-shaped first holding piece 211. Two ends of the first holding piece 211 are respectively bent outward to form a first tab 212. The middle of one side of the first holding piece 211 extends forward to form a straight first connecting portion 213. A free end of the first connecting portion 213 is bent to form a first contact point 214. The second contact terminal 22 is shorter than the first contact terminal 21 and is substantially the same as the first contact terminal 21. The second contact terminal 22 includes a second holding piece 221, a second tab 222, a second connecting portion 223, and a second contact point 224.
The positioning piece 30 is an arc-shaped sheet. The middle of the positioning piece 30 is bent inward to form a retaining portion 31. The ring 51 and the cap 52 are cylinder-shaped.
The shell includes a first shell 41 and a second shell 42. The first shell 41 has a first basic portion 411 of a hemi-cylinder shape. An arc-shaped first protrusion 412 is protruded from an inner surface of the first basic portion 411. Two first rods 413 are abreast protruded from a middle portion of the inner surface of the first basic portion 411. An elongated first projection 414 is protruded from the inner surface of the first basic portion 411 along an axis direction of the first shell 41. Two ends of two opposite sides of the first projection 414 are protruded to form a plurality of first bumps 415.
Please refer to
Please refer to
The shaft 60 has a cylindrical contact loop 61. A fixing groove 611 is formed in an outer surface of the contact loop 61 extending along an axis direction of the contact loop 61. A positioning loop 62 extends rearward from a rear end of the contact loop 61. A plurality of positioning slots 621 is equidistantly defined in an outer surface of the position loop 62 and extends along an axis direction of the positioning loop 62. A rear end of the positioning loop 62 extends outward to form a retaining piece 63. A drive portion 64 extends rearward from the retaining piece 63 and a plurality of fixing pieces 641 equidistantly extends outward from an outer surface of the drive portion 64. A shaft hole (not labeled) passes through the shaft 60.
With referring to
Please refer to
The shaft 60 assembled with the switch terminal 70 is installed in the first shell 41. The retaining piece 63 is retained by the end of the first shell 41 adjacent to the first protrusion 412. The contact loop 61 is supported by the first holding piece 211 and the positioning loop 62 is supported by the positioning pieces 30.
The second shell 42 is engaged with the first shell 41. The first rods 413 are respectively inserted into the second holding holes 426. The first contact portion 12, the second contact portion 13 and the extending portion 14 of the plug 10, the first contact terminal 21, the second contact terminal 22, the positioning pieces 30, the switch terminal 70, the contact loop 61 and the positioning loop 62 of the shaft 60 are surrounded in the space inside the first shell 41 and the second shell 42. The first holding piece 211 and the second holding piece 221 are placed on the outside of the contact loop 61 and spaced from each other. The positioning loop 62 is surrounded by the two position pieces 30. The retaining portions 31 of the two positioning piece 30 are respectively received in the opposite positioning slots 621 of the positioning loop 62. The first contact point 214 of the first contact terminal 21 and the second contact point 224 of the second contact terminal 22 respectively contact the first contact portion 12 and the second contact portion 13 of the plug 10. The ring 51 encircles the first shell 41 and the second shell 42 at the end away from the plug 10. The cap 52 encircles the first shell 41 and the second shell 42 at the end adjacent to the plug 10. The first shell 41 and the second shell 42 are fastened together firmly by the ring 51 and the cap 52.
The shield 80 is substantially cylinder-shaped and surrounds the first shell 41 and the second shell 42. The mating portion 11 of the plug 10 extends out of the shield 80 through one end of the shield 80. The drive portion 64 is inserted into the tail 90 and a front end of the tail 90 is restrained by the retaining piece 63. The fixing piece 641 of the drive portion 64 is fixed in an inner surface of the tail 90 to prevent the shaft 60 being relative moved to the tail 90.
A headset (not shown) includes a microphone for audio input and a speaker for audio output. A headset cable (not shown) has two signal wires connected with the microphone, two signal wires connected with the speaker, and a grounding wire. The cable passes through the tail 90 and the shaft hole of the shaft 60 to make that the two signal wires connected with the microphone are respectively soldered to the second contact portion 13 of the plug 10 and the soldering piece 72 of the switch terminal 70, the two signal wires connected with the speaker are soldered to the plug 10, and the grounding wire is soldered to the first connecting portion 213 of the first contact terminal 21.
In use, the audio plug connector 1 is adapted for inserting into a complement audio jack connector (not shown). A user rotates the tail 90 to make the shaft 60 rotate relatively to the first shell 41 and the second shell 42. The switch terminal 70 fixed in the shaft 60 rotates with the rotation of the shaft 60. When the retaining portion 31 of each positioning piece 30 is sliding in adjacent positioning slot 621, the rotation is stopped. The contact piece 712 of the switch terminal 70 contacts the first holding piece 211 or the second holding piece 221. The switch terminal 70 is connected with one of the two signal wires connected with the microphone, the first contact terminal 21 and second contact portion 13 are respectively connected with the grounding wire and the other one of the two signal wires. So when the switch terminal 70 contacts the first holding portion 211 of the first contact terminal 21 which is connected with the grounding wire, the microphone is inactive. When the switch terminal 70 contacts the second holding portion 221 which is electrically connected with the microphone, the microphone is in operation. The speaker which is connected with the plug 10 is always in operation when the audio plug connector 1 is electrically connected with the audio jack connector.
As described above, the audio plug connector 1 according to the present invention provides the switch terminal 70 to be selectively connected with the first contact terminal 21 and the second contact terminal 22, which can control whether the microphone is in operation. So the audio plug connector 1 is easy to make the microphone cut off yet the speaker is still in operation.
The foregoing description of the present invention has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. Such modifications and variations that may be apparent to those skilled in the art are intended to be included within the scope of this invention as defined by the accompanying claims.
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|U.S. Classification||439/669, 200/51.00R|
|Cooperative Classification||H01R35/00, H01R13/701, H01R2107/00, H01R2105/00, H01R24/58|
|European Classification||H01R24/58, H01R13/70B, H01R35/00|
|Oct 29, 2008||AS||Assignment|
Owner name: CHENG UEI PRECISION INDUSTRY CO., LTD., TAIWAN
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LIN, MING-HAN;YIN, TE-HUNG;REEL/FRAME:021758/0543
Effective date: 20081020
|Mar 15, 2013||FPAY||Fee payment|
Year of fee payment: 4